\documentclass{article}
\usepackage{amssymb,amsmath,parskip}
\usepackage{graphicx}
\usepackage[spanish,activeacute]{babel}
\title{\textbf{the_title}}
\author{the_author}
\begin{document}
\maketitle
\begin{center}
Memory: the_memory MB\\
Time: the_time seg.\\
Source: the_source bytes\\
\end{center}
\section*{Descripcion}
\input{description}
\section*{Entrada}
\input{input1}
\section*{Salida}
\input{output1}
\section*{Ejemplo de Entrada}
\texttt{\input{sample1}}
\section*{Ejemplo de Salida}
\texttt{\input{sample2}}
\end{document}
